[ 11.188921][ T252] ip (252) used greatest stack depth: 23952 bytes left [ 13.578165][ T308] 8021q: 802.1Q VLAN Support v1.8 [ 16.913456][ T378] GACT probability NOT on [ 18.289918][ T413] br10: port 1(veth1.10) entered blocking state [ 18.290546][ T413] br10: port 1(veth1.10) entered disabled state [ 18.291138][ T413] veth1.10: entered allmulticast mode [ 18.291446][ T413] veth1: entered allmulticast mode [ 18.294448][ T413] veth1.10: entered promiscuous mode [ 18.294668][ T413] veth1: entered promiscuous mode [ 18.859605][ T430] br11: port 1(veth1.11) entered blocking state [ 18.859955][ T430] br11: port 1(veth1.11) entered disabled state [ 18.860680][ T430] veth1.11: entered allmulticast mode [ 18.862605][ T430] veth1.11: entered promiscuous mode [ 19.659515][ T460] br10: port 2(veth2.10) entered blocking state [ 19.659839][ T460] br10: port 2(veth2.10) entered disabled state [ 19.660156][ T460] veth2.10: entered allmulticast mode [ 19.660352][ T460] veth2: entered allmulticast mode [ 19.662331][ T460] veth2.10: entered promiscuous mode [ 19.662557][ T460] veth2: entered promiscuous mode [ 20.170391][ T477] br11: port 2(veth2.11) entered blocking state [ 20.170760][ T477] br11: port 2(veth2.11) entered disabled state [ 20.171115][ T477] veth2.11: entered allmulticast mode [ 20.173739][ T477] veth2.11: entered promiscuous mode [ 20.587989][ T489] br10: port 2(veth2.10) entered blocking state [ 20.588573][ T489] br10: port 2(veth2.10) entered forwarding state [ 20.589391][ T489] br10: port 1(veth1.10) entered blocking state [ 20.589835][ T489] br10: port 1(veth1.10) entered forwarding state [ 20.719797][ T494] br11: port 2(veth2.11) entered blocking state [ 20.720223][ T494] br11: port 2(veth2.11) entered forwarding state [ 20.720753][ T494] br11: port 1(veth1.11) entered blocking state [ 20.721081][ T494] br11: port 1(veth1.11) entered forwarding state [ 29.889442][ T548] [ 29.889752][ T548] ============================= [ 29.889913][ T548] WARNING: suspicious RCU usage [ 29.890093][ T548] 6.14.0-rc6-virtme #1 Not tainted [ 29.890276][ T548] ----------------------------- [ 29.890714][ T548] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 29.890977][ T548] [ 29.890977][ T548] other info that might help us debug this: [ 29.890977][ T548] [ 29.891278][ T548] [ 29.891278][ T548] rcu_scheduler_active = 2, debug_locks = 1 [ 29.891504][ T548] 1 lock held by mausezahn/548: [ 29.891658][ T548] #0: ffffffffb235b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 29.891951][ T548] [ 29.891951][ T548] stack backtrace: [ 29.892154][ T548] CPU: 0 UID: 0 PID: 548 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 29.892158][ T548] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 29.892160][ T548] Call Trace: [ 29.892163][ T548] [ 29.892165][ T548] dump_stack_lvl+0xb0/0xd0 [ 29.892175][ T548] lockdep_rcu_suspicious+0x1ea/0x280 [ 29.892187][ T548] dev_hard_start_xmit+0x2fc/0x3f0 [ 29.892197][ T548] __dev_queue_xmit+0xfaf/0x18d0 [ 29.892203][ T548] ? __pfx__copy_from_iter+0x10/0x10 [ 29.892213][ T548] ? __pfx_vlan_parse_protocol+0x10/0x10 [8021q] [ 29.892226][ T548] ? __pfx___dev_queue_xmit+0x10/0x10 [ 29.892230][ T548] ? packet_parse_headers+0x231/0x9c0 [ 29.892238][ T548] ? copy_page_from_iter+0xbd/0x120 [ 29.892244][ T548] ? __pfx_packet_parse_headers+0x10/0x10 [ 29.892248][ T548] ? skb_copy_datagram_from_iter+0x29f/0x6f0 [ 29.892263][ T548] packet_snd+0xd0c/0x19d0 [ 29.892275][ T548] ? __lock_release+0x103/0x460 [ 29.892279][ T548] ? __might_fault+0x11b/0x170 [ 29.892288][ T548] ? __pfx_packet_snd+0x10/0x10 [ 29.892290][ T548] ? trace_lock_acquire+0x14c/0x1f0 [ 29.892292][ T548] ? __might_fault+0x11b/0x170 [ 29.892299][ T548] ? lock_acquire+0x32/0xc0 [ 29.892305][ T548] ? __might_fault+0x11b/0x170 [ 29.892317][ T548] __sys_sendto+0x3c3/0x450 [ 29.892323][ T548] ? __pfx___sys_sendto+0x10/0x10 [ 29.892338][ T548] ? sock_ioctl+0x3b6/0x590 [ 29.892343][ T548] ? __pfx___lock_release+0x10/0x10 [ 29.892351][ T548] ? __pfx___up_read+0x10/0x10 [ 29.892361][ T548] ? do_user_addr_fault+0x972/0xe30 [ 29.892371][ T548] ? do_user_addr_fault+0x97c/0xe30 [ 29.892378][ T548] __x64_sys_sendto+0xe0/0x1c0 [ 29.892382][ T548] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 29.892387][ T548] do_syscall_64+0xc1/0x1d0 [ 29.892396][ T548] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 29.892402][ T548] RIP: 0033:0x7f85cb488a4a [ 29.892407][ T548] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 [ 29.892409][ T548] RSP: 002b:00007ffc6b637238 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 29.892413][ T548] RAX: ffffffffffffffda RBX: 0000000019c739d0 RCX: 00007f85cb488a4a [ 29.892415][ T548] RDX: 0000000000001f6a RSI: 0000000019c768e2 RDI: 0000000000000005 [ 29.892417][ T548] RBP: 0000000019c768e2 R08: 00007ffc6b637240 R09: 0000000000000014 [ 29.892419][ T548] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 29.892421][ T548] R13: 0000000000001f6a R14: 00007ffc6b637240 R15: 0000000000000000 [ 29.892437][ T548] [ 101.983306][ T838] br11: port 2(veth2.11) entered disabled state [ 101.984615][ T838] br11: port 1(veth1.11) entered disabled state [ 102.103159][ T840] br10: port 2(veth2.10) entered disabled state [ 102.103800][ T840] br10: port 1(veth1.10) entered disabled state [ 102.340600][ T844] veth2.11: left allmulticast mode [ 102.340862][ T844] veth2.11: left promiscuous mode [ 102.341407][ T844] br11: port 2(veth2.11) entered disabled state [ 102.719365][ T852] veth2.10: left allmulticast mode [ 102.719611][ T852] veth2: left allmulticast mode [ 102.719821][ T852] veth2.10: left promiscuous mode [ 102.720011][ T852] veth2: left promiscuous mode [ 102.720604][ T852] br10: port 2(veth2.10) entered disabled state [ 103.271436][ T862] veth1.11: left allmulticast mode [ 103.271716][ T862] veth1.11: left promiscuous mode [ 103.272257][ T862] br11: port 1(veth1.11) entered disabled state [ 103.577834][ T868] veth1.10: left allmulticast mode [ 103.578097][ T868] veth1: left allmulticast mode [ 103.578314][ T868] veth1.10: left promiscuous mode [ 103.578494][ T868] veth1: left promiscuous mode [ 103.578986][ T868] br10: port 1(veth1.10) entered disabled state